Features: The signal strength output by electric guitars, hair dryers, saxophones, electronic pianos, electronic drums is about 0.3vrms to 2vrms; Reduce the signal output by the circuit to a small size that can be input to devices with microphone interfaces; The microphone input port requires voltage of 0.01V-0.1V. If the output signal of the circuit is input, excessive signal can cause serious distortion. This machine can reduce the signal to a suitable size, so that some devices can be input to the sound card, speaker interface, causing them to produce reverberation effect. It is suitable for some music playing friend to live stream and record videos. Specifications: Material: Metal Option Type:1pc Signal Passive Attenuator with 1pc 3.5mm Cable,1pc Signal Passive Attenuator with 1pc 6.5mm Cable, Size:Approx.65x53x24mm/2.56x2.09x0.94inch; Package Includes: 1pc Signal Passive Attenuator 1pc 3.5mm Cable note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.